A wardisc is a weapon projectile employed by the Arcanian arm (Thrower). They are flat circles of wood, with spikes on the top and bottom sides, and a very sharp edge running along the circumference. They are primarily used in ship warfare, and are currently the only projectile weapon available to a Windcutter class vessel, bar boarding planks.
The main use of the wardisc is to directly damage an enemy ship's crewmembers.